2 years ago

Find the distance from the base of the ladder to the house.

Mathematics

1 answer:

True [87]2 years ago

7 0

Answer:

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Step-by-step explanation:

1.vuybcewouinjhi

2.dfbvfdsa

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The half-life of carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only 66% of the carbon-1

xz_007 [3.2K]

The tree died about 3357 years ago.

Explanation:

The half life of carbon - 14 is given by

$A(t)=A(0)e^{-kt}$

where $A(t)=0.5$

$A(0)=1$

$t=5600$

Substituting these values in the above equation, we get,

$0.5=1e^{-5600k}$

Taking In on both sides of the equation, we get,

$In(0.5)=-5600k$

$\frac{In(0.5)}{-5600} =k$

$0.00012377=k$

Since, only 66% of Carbon - 14 remains after the time T.

Thus, we have,

$0.66=1e^{-kT}$

Taking In on both sides of the equation, we get,

$In(0.66)=-0.00012377 \ T$

$\frac{In(0.66)}{-0.00012377} = T$

$3357=T$

Thus, the tree died about 3357 years ago.

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2 years ago

If a = 4 units, b = 7 units, c = 8 units, d = 11 units, and e = 5 units, what is the volume of the composite figure?

s2008m [1.1K]

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2 years ago

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Anvisha [2.4K]

15*0.65= $9.75 is the sale price

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2 years ago

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How much does mike charge a new customer to ship a package that weighs 50 pounds ? He chargers $40 per pound.

Vera_Pavlovna [14]

Answer:

$2000

Step-by-step explanation:

For each pound, the charge is $40. There are 50 such charges. The point of multiplication is to simplify the process of repeated addition.

... 50 × $40 = $2000

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2 years ago

Every week, Mr. Kirkson uses 3 1/6 gallon of water to water every 1/3 square foot of his garden. How many gallons of water does

nata0808 [166]

3 1/6 / 1/3 =

19/6 / 1/3 =

19/6 * 3/1 = 57/6 = 9 1/2 gallons per square foot

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2 years ago

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